Add 84/70 and 20/42
1st number: 1 14/70, 2nd number: 20/42
84/70 + 20/42 is 176/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
84/70 = 84 × 3/70 × 3 = 252/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Add the two like fractions:
252/210 + 100/210 = 252 + 100/210 = 352/210 - 352/210 simplified gives 176/105
- So, 84/70 + 20/42 = 176/105
In mixed form: 171/105
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